/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/GameplayEffectExecutionCalculation.h
Attempts to populate the specified aggregator with a snapshot of a backing transient aggregator. Can fail if the transient aggregator doesn't exist as a result of no scoped mods targeting it.
True if the aggregator was successfully snapshotted, false if it was not
bool AttemptGetCapturedAttributeAggregatorSnapshot ( const [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) & InAggregatorIdentifier, [FAggregator](API\Plugins\GameplayAbilities\FAggregator) & OutSnapshottedAggregator ) const